docs: def access_specifier(self):
          """
          Retrieves the access specifier (if any) of the entity pointed at by the
          cursor.
          """
          if not hasattr(self, '_access_specifier'):
              self._access_specifier = conf.lib.clang_getCXXAccessSpecifier(self)
  
          return AccessSpecifier.from_id(self._access_specifier)